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Normal 0 false false false EN-US X-NONE X-NONE HELLO WONDERFUL BUYERS to help you make the best buying decision; please read condition notes and view images of actual item for sale. FOR SALE: BRYSTON BDA-1- Up-sampling D/A Converter-Original Box, Manual, Power cord CONDITION: Please refer to images of actual item for sale This unit comes from my personal collection Carefully used Operation Condition: In working order Cosmetic Condition: Light age wear (scuffs, light stain marks on top only) No Grimes on unit SPECIFICATION: Enough Digital inputs for any Studio or Audiophile sound choices USB Input 32-48 KHz max Four S/PDIF electrical (RCA, BNC) 32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz Two S/PDIF optical (TosLink) 32, 44.1, 48, 88.2, 96, 176.4, and 192kHz One AES/EBU (XLR) 32, 44.1, 48, 88.2, 96, 176.4, and 192kHz WHAT YOU GET: BRYSTON BDA-1- Up-sampling D/A Converter (Silver, Black) Original Box Original Manual with One page USB pamphlet Detached Generic power cord And above all UNIT IS READY FOR IMMEDIATE USE SHIPPING: USA Only: Ships out via USPS Ground Advantage with tracking number FINAL WORD: Works as indicated above I have been selling on eBay for long time, please feel comfortable to buy this piece it should work as stated DUE TO VINTAGE PIECE SOLD AS IS NO RETURN, EXCHANGE OR REFUND If you have any question(s), please feel free to contact me 24/7 prior to purchase Thanks for reading have a very blessed day! INFORMATION: The following below information courtesy of STEREOPHILE Internal Details Just behind the rear panel is the full-width, multilayered printed circuit board that carries the D/A and analog stages. I wasnt able to get inside the chassis because I didnt have a driver that matched its Torx #8 screws; however, the BDA-1s brochure includes a clearly labeled view of the BDA-1s innards. Most of the interior is empty space, with a single ribbon cable joining the circuit board to another behind the front panel. Starting at the left of the main board are separate toroidal power transformers for the analog and digital power supplies. Nearby are multistage voltage regulation and filtering components, including electrolytic capacitors and a row of heatsunk voltage regulators. Each stage (input receiver, sample-rate converter, DAC) is independently regulated to prevent interaction and to minimize jitter. Careful trace routing is used to reduce the risk of capacitive coupling to achieve greater reduction of noise and distortion, especially for the low-voltage analog signal leaving the DAC. In the center is a Burr-Brown SRC4392 sample rate-converter chip, to the right of which is a pair of DAC chips, these 128x-oversampling 24-bit delta-sigma Cirrus CS4398s, the same as used in the BCD-1, though only one chip is used in the CD player. Finally, on the far right are four rows of components that comprise the discrete analog amplifiers output stages. Bryston describes the PCB as being constructed of double-sided epoxy glass with clearly printed component markings. All the components are surface-mount types, and high-quality, 0.1%-tolerance metal-film resistors and polystyrene capacitors are used. Soldered and other gas-tight mechanical connections are used for the signal circuits. Brystons warranty is five years for the digital circuits, including parts and labor, and 20 years for the analog circuits. Design Considerations One of Brystons primary goals for the BDA-1 was to reduce clock jitter, ie, mistimings of the digital datastream presented to the DAC. Unlike the companys BCD-1 CD player, a one-box transport and DAC, the standalone BDA-1 must reclock all signals fed to its data inputs. To maintain timing accuracy, the Bryston engineers used three different methods of maintaining accuracy and keeping jitter to a minimum: impedance-matching transformers to provide the best interface possible, reclocking the signal, and synchronously up sampling the signal. The BDA-1s Burr-Brown SRC4392 sample-rate converter provides synchronous up sampling: 32, 48, and 96 kHz data are up sampled to 192 kHz, while 44.1 and 88.2 kHz data are up sampled to 176.4 kHz. The Compact Discs 16-bit depth can be increased to 24 bits, the additional 8 bits filled with placeholder information. While this adds no new information, the conversions of the sample rate and bit depth transform the digital signal into a format that can be optimally converted into an analog signal by the DAC, says Bryston. The D/A conversion are done by a pair of Crystal CS4398 integrated-circuit chips, which feed discrete-component, class-A output amplifiers. Conclusions The Bryston BDA-1 let me enjoy the best-sounding digital playback Ive ever heard in my listening room, outshining even Brystons own BCD-1 CD player. This might be related to the fact that the BDA-1 has two Crystal CS4398s vs the BCD-1s single chip. Price: $1995-$2050 in 2010
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